.middle {
    margin: 50px 0;
    display: flex;
    justify-content: center;

}

.middle > div {
    width: 1000px;
    border: 1px solid red;
}

.middle > div > div:nth-child(1) {
    display: flex;
    justify-content: space-between;
}

.middle > div > div:nth-child(1) > div:nth-child(2) {
    display: flex;
    align-items: center;
}

.middle > div > div:nth-child(1) > div:nth-child(2) > div {
    background-color: rgb(243, 243, 243);
    line-height: 61px;
    padding: 0 30px;
}

.middle > div > div:nth-child(1) > div:nth-child(2) > div:hover {
    background-color: rgb(230, 144, 57);
    color: white;
    cursor: pointer;
}

.middle > div > div:nth-child(1) {
    border-bottom: 1px solid red;
}

/*------------------新闻详细内容-------------------------*/
.middle > div > div:nth-child(2) {
    padding: 10px;
}

.content > div {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid red;
    line-height: 30px;
    margin-top: 10px;
    color: gray;
}

.content > div > div:nth-child(1) {
    display: flex;
}

